Magneto-electric pocket-lamp.



M. A. PATTAY & E. JA'QUEMOY. MAGNETO ELECTRIC POCKET LAMP.

APPLICATION 'HLE D NOV- 2, I918- v v Patented Apr. 22, 1919.

UNITED (STATES PATENT OFFICE.

' imromn man am) EUGENE .mqunmo'r, or GENEVA, swxrzmm.

MAGNETO-ELECTRIC rocxa'anam-r. I

Specification of Letters Patent.

Patented Apr. 22, 1919.

Application filed November 2, 1918. Serial No. 280,882.

To all whom it may concern:

Be it known that we, Mano ANTOINE PAT- TAY manufacturer, and EUGENE JAQUEMOT, mec anic, citizens of Switzerland, residing at Geneva, Canton of Geneva, in the Confederation of Switzerland, have invented certain new and useful Improvements in Magneto-Electric Pocket-Lamps, of which the following is a specification.

The present invention relates to magnetoelectric ocket lamps comprising like other lamps of the kind, a mechanism for turning the armature of their magneto-electric machine but without the aid of a spring barrel, said mechanism presenting two driving devices, one with an alternating rocking arm and the other with a circular continuous movement crank each operated quite indeendently from the other. This lam differs however from othersby the fact, t at said mechanism is located within a casing composed of two side-sheets with inwardly turned flanges, around which is bent closely fitting a somewhat flexible band, maintained in place b sheets. The whole being arranged so as to have the band easily dismounted from said side sheets by withdrawing one of the fasteners and to have said band replaced again by putting in again said fastener.

The annexed drawing represents as an example one working form of the lamp.

Figure 1 is an axial longitudinal section thereof.

Fig. 2 a side elevation partly in section and standing at an angle of 90 with the plan of the section of Fig. 1.

Figs. 3 and etare a longitudinal and a A cross section of the casing and of some parts connected therewith.

Fig. 5 is a longitudinal section of a portion of said casing standing at an angle of 90 with the section of Fig. 3.

Fig. 6 is part side elevation and part section of said casing and Figs. 7 to 9 are views of some details.

This working form of the invention presents two parallel narrow bars a, b of rectangular form (Figs. 1, 3, 4 and 6) kept some distance apart from each other. To astay 0 (see also Fig. 2) is fastened by means of a screw d the magnet e of the magnetoelectric machine. This magnet consists of a horseshoe-shaped iron part e provided with pole shoes 6 fitted thereonto and of a second piece 6 likewise horse-shoe-shaped and fitted two fasteners held by said side to the inside of the first and abutting with its ends against the pole-shoes e. The armature f rotating between thelatter has an iron core f ofa double T-shaped cross section carrying a winding f and supported between two disks, (llSk f carrying a short trunnion f lodged within a sparing of bar b and disk f being provided with a somewhat longer trunnion f lodged in a sparing of bar a and carrying a pinion gscrewed on to it. Pinion g meshes with a toothed wheel Iz.

- fast on the arbor h and attached to apinioi k wherewith is meshed a toothed wheel keyed to an arbor k.

One of the driving devices consists of a pinion l (Figs. 1 and 2) carried loose on the arbor k, and attached to a coupling member m of a do clutch couplin m and meshed with a toot ed segment 01. xed rigidly fast to an alternating lever n (see also Figs. 4 and 7). The coupling part we is made to slide on arbor k, but is kept engaged by means of a flat spring 0 (contrarily to what is shown in Fig. 1 for clearness sake) with the other coupling member m which is fast on arbor k and therefore also fast to wheel 2',

said spring 0 being clamped at one end between bar I; and stay-bolt 0 and being engaged with the other forked end within a circular groove spared in member m Pinion Z is of such a width, that segment n will always be kept meshing with it whatever may be the position of the coupling members. Lever 'n has the cross-section of an angle-iron whereof one branch is carrying the segment 11. while the other is fast to an arbor p which is acted upon by a cylindrical s ring q wound upon it and tr ing to keep t e lever at some distance rom magnet e.

An arm 5 (Figs. 1, 2, 4, 6, 9) pivoted at 5 is provided with two projections 5 5 in- J into the one or the other of the two corresponding positions by means of a pusher n provided thereon. In an intermediate position of said pusher the segment a may be freed entirely from pinion Z.

The crank 'r' (Fig. 1) of the other starting device is provided with a knob r and may ceive a somewhat flexible metallic band (see also Figs. 5 and 8) being 'U-shaped be brought into a position where it turns arbor k, or if not used may be laid flat down along bar 6. To this end it is pivoted in ears 8 on a hinge-plate s, which is kept in place by means of a ferrule t, screwed into ar 6 so as to form a bearing of arbor k without hindering hinge-plate s to be turned with the crank. The squared end portion L of arbor k is made to be fitting into a sparing r of similar form of crank 1' while the latter is in its operating position.

The casing of the lamp comprises two stamped metal sheets u, 1) (Figs. 1, 2, 3, 4, 6) attached to the'bars a, b by means of screws and provided with sunk portions for receiving said bars, said sheets, while being kept a given distance apart by a tie bolt 0 and by the two-pole-pieces (5 carrying the arbor p of the arm n. On three sides of their inside faces these sheets are provided with inwardly turned flanges u '0, adapted to reandalso forming part of the casing.' The two ends of this band are bent around over in shape of sleeves w, 10 where may be inserted the check pins 00, y, resting with their two ends within sparings '0 of the sheets,

thus maintaining said band 'w! in place".-

Check pin w besides is serving as the axis of a cover 2 hinged to the band &0, which is also a part of the casing and carries a reflector 2 in the focus of which is provided the electric glass bulb 1 fed from the machine. In front of the reflector there is a lens 3 held fast by a threaded ring. Cover 2 is provided also with a resilient metallic strap 2 catching the sleeve 10 if cover a gets closed, thus securing said coverin its closed position.

In the respective side wall of the casing there is also spared an opening '0 to receive the knob 1' of the crank in its clasped-down position and an are shaped slot '11 for the play of the pusher n The socket of the bulb 1 makes contact through the body of the lamp with one of the poles of the armature, while the other pole of the latter is insulated and in constant contact with an insulated disk f fastened to the trunnion f by means of the threaded pinion g screwed on to it and against which is rubbing one branch of an insulated flat spring 4 bent' ofl:' into an angle, the other branch of the sprlng 4, when cover z is in its closed position, being in contact with the insulated contact-button of the bulb 1.

Theworking of this form of lamp is as follows:

If the lamp is wanted to work by means of arm m, hinge-plate 8 and crank 1' are brought into the position as indicated in Fig. 2 in which pos1t1on knob r is sunk within'the opening 01 of sheet a, then pusher n is shifted into its lower position, if it should rotate pinion Z in such a sense that coupling member m of the coupling m will take along the member m and with it arbor k and wheel 2'. The latter operates the armature f by means of pinions and wheels hf, h, g, the inertia of the moving parts being strong enough to produce a continuous movement during the periods, when arm n is left alone to the effect of spring 9. The vhinge-plate s will then not participate in the movement.

If to the contrary it is wanted to operate the lamp by means of crank 'r, the knob 11. is brought into its end position where it arrests the segment 11. and the lever n in the position indicated in the drawing. The cas- By turning continuously with the second hand this crank arbor k and armature f will be operated. During this movement member m of coupling on will be wiping with its teeth over those of the other member without taking the latter .along with it, which is then held fast by segment a and arm 5.

The two starting devices are thus working quite independently from each other. The arrangement shown and described is verv convenient, because the operating of a magneto-electric machine by means of repeated pressures on an arm is advantageous, if light is to be produced only for a short period, but becomes rather tiresome, if the lamp is to be operated during several minutes. The working by means of the crank is less fatiguing and is to be preferred, if both hands are free. For inspecting the mechanism it needs only the opening of the cover and the pulling out of check-pin y from the sleeve w Band to may then be withdrawn from the flanges a '0 of sheets u, o and be taken ofl together with the cover 2 and the bulb 1 by pulling out also check-pin w from its respective lodgings' Thus the mechanism is laid open. In order to replace it into the casing it has to be proceeded in the reverse sense, by putting first the check-pin :20 into the corresponding sparings, by abating successively band 00 down unto the flanges a, '0 by beginning with the portion of it next to a: and by introducing the check pin 1 in the respective sparings and into the sleeve w. Due to this arrangement the dismounting of the casin and of the mechanism and the reassembling of the same is made easy without any tool, the check-pin 3 being provided with a suitably shaped head so as to be easily operated by the fingers.

Having now fully described and ascertained the nature of our said invention and in what manner the same is to be performed,

ternating rocking arm, and the other with a continuous crank movement, of two sidesheets partly surrounding said bars with sunk portions and provided on three sides with inwardlv directed flanges, of a somewhat flexible metallic band bent so as to apply to said flanges and of two fasteners held in place by said sheets and the whole arranged so as to be easily disconnected after the withdrawal of one of said fasteners andto be remounted again after the replacing of the same for-the urpose set forth.

2. In a magneto: ectric pocket lam the combination with the framing of the amp consisting of the two side-bars and the stays; of the two side-sheets provided on three sides with inwardly directed flanges and with sparings, of the somewhat flexible band provided with sleeve-shaped ends and of the two fastening check-pins provided with suitably shaped heads all substantially as shown and described and for the purpose set forth.

3. In a magneto-electric pocket-lamp the combination with the framing of the lamp consisting of the two side bars and the distance stays, of the two side-sheets provided on three sides with inwardly directed flanges and with sparings, of the somewhat flexible metallic band provided with sleeve shaped ends, one of which is-forming part of a hinge, of the cover carrying the bulb and provided with the resilient metallic strap and with the other part of said hinge and of the twocheck pinsprovided with suitably shaped heads all substantially as shown and described and for the purpose set forth.

4. In a magento-electric pocket-lamp, provided with two kinds of starting-devices, one

with an alternating rocking arm and the other with a continuous crank movement, the combination with the toothed segment provided with the projection and the recess and attached to the arm of the starting-de vice and of an arm pivoted on the casing of the lamp and provided with a pusher pro jecting to the outside of the casing and with projections adapted to meet one with the said projection and the other with the recess of the segment, all substantially as shown and described and for the purpose set forth. In testimony whereof we have aflixed our signatures in presence of two witnesses.

MARC ANTOINE PATTAY. EUGENE JAQUEMOT.

Witnesses 

